Plunger for brick-machines



(No Model.)

J. LEONI-IARDT.

i PLUNGEB. FOR BRIGK MAGHINES. No. 518,460. Patented Apr. 17,1894.

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NTTED STATES PATENT Ormes.

JACOB LEONI-IARDT, OF ST. LOUIS, MISSOURI.

PLUNGER FOR BRICK-MACHINES.

SPECIFICATION forming part of Letters Patent No. 518,460, dated April17, 1894.

Application filed April 10, 1893.

To all whom tmay concern:

Be it known that I, JACOB LEONHARDT, of the city of St. Louis and Stateof Missouri, have invented certain new and useful Improvements inPlungers for Brick-Machines, of which the following is a full, clear,and eX- act description, reference being had to the accompanyingdrawings, forming a part hereof.

My invention relates to an improved plunger for brick-machines,particularly adapted for use in the class of machines in which thebricks are molded by the force of reciprocat- 1ng plungers, and itconsists in the novel construction, arrangement and combination of partshereinafter described and claimed.

The principal object of my invention is to provide a plunger, or aseries of plungers carried byacommon reciprocating head, with improvedmeans whereby the same will be efticiently and automatically lubricatedduring operation.

In the drawings, Figure lis a sectional sideelevation of portions of abrick-machine, having my' invention applied thereto. Fig. 2 is asectional plan-view of a reciprocating head carrying a series ofplungers. Fig. 3 is a section on line 3-3 of Fig. 2. Fig. 4 is aperspective View of a plunger detached from its head, and shownincomplete.

l indicates an improved brick-mold constructed with a series ofpress-boxes 2, which are engaged by the plungers 3 of the machine, whenthe machine is constructed with more than one plunger. This mold,however, I do not claim herein, as I have made it the subject of aseparate application led by me of even date herewith, Serial No.469,768.

4 indicates a head, which is adapted to be reciprocated during use, andupon which the series of plungers 3 are mounted so as to engage saidpress-boxes.

As each plunger is constructed identical with all the others of theseries, I will limit my description to one of them. The plunger consistsof a solid rectangular block of metal and is provided upon diagonallyopposite corners with vertical recesses 5, terminating in shoulders orflanges 6. The plunger is secured to the head 4 by means of bolts 7passed through the lower flanges 6 and through a liange 8 formed uponsaid head, or in any known equivalent manner. The plunger has Serial No.469,767. (No model.)

`rections in the upper face of the plunger.

ample height to permit its passing into a press-box of the mold asutticient distance to perform the work required of it. The plunger isprovided with a vertical feed-passage 9, which has a closed lower endand an upper end communicating with a series of oil ducts l0 formed uponand extending in various d marginal angular groove or rabbet 11 isformed in the upper end of said plunger, with its lower wall inclinedinward and downward. A packing or gasket b of felt or other suitableporous material, is located in this rabbet 1l and held in place thereinby means of the face-plate 12, which latter is placed in contact withthe upper end of the pl'unger and said packing and held in place bybolts or screws 13, passed through the upper shoulders or flanges 6 ofsaid plunger and threaded into, but not through said face-plate. Theupper surface of this face-plate should be retained smooth and unbroken,for an obvious purpose, and is so retained.

14 indicates a supplypipe or pipe-connection, which communicates withthe vertical feedpassage 9, to supply oil or other lubricant to theplunger.

15 indicates a main oil supply pipe, which is in communication with thepipe or passage 14 of each plunger of the series, when the series ofplungers is made use of. Oil or other lubricant may be supplied to thismain pipe from atank or reservoir 16, situated properly to supply oil tosaid plunger or plungers and force same up through the vertical passage9 into the several oil ducts 10 and into the interstices of the packingl), from whence it is distributed upon the various surfaces of thepress-boxes, by frictional contact and the capillary attraction.

It is obvious that the passage 9 could be located upon the exterior ofthe plunger, or in a different position from that here shown, and theoperation would be substantially the same in each case, providing theupper end of said passage be connected to distribute the lubricant tothe parts whichrequire it.

From the foregoing it will be observed that I have provided improvedmeans for automatically lubricating one or a series of reciprocatingbrickmachine plungers during their reciprocative movement, for if thetank 1G or IOO other supply be fixed upon some stationary object, theresult will be as above described, for in such easel connect such sourceof supply to the main pipe 15 by means of a flexible hose or tube 17. Insome cases I loeate the tank or other supply of lubricant upon thereciprocating head 11, the same being elevated or otherwise properlyarranged to accomplish the above described function.

What I claim iS- A plunger for brick-machines and the like, consistingof a solid rectangular block of inaterial provided upon diagonallyopposite corners with Vertical recesses 5 terminating in anges 6, incombination with a head, bolts '7 passedthrough thelower flanges 6 andthrough holes in said head and securing the plunger to the head, saidplunger having a vertical upper face of said plunger, substantially asIherein specified.

In testimony whereof I afx my signature in presence of two Witnesses.

JACOB LEONHARDT. Witnesses:

E. EVERETT LONGAN, J No. C. HIGDoN.

